Customization: | Available |
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CAS No.: | 57-13-6 |
Formula: | CH4n2o |
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What is Automotive Grade Urea?
According to ISO22241 standard
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Test Items
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Unit
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specification
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T-nitrogen
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%
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>46
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moisture
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%
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<0.5
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Biuret
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%
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<0.8
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alkalinity(NH3)
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%
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<0.05
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aldehyde
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mg/kg
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<15.4
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insoluble matter
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mg/kg
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<61.5
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PO4
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mg/kg
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<1.5
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Ca
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mg/kg
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<1.5
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Fe
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mg/kg
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<1.5
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Cu
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mg/kg
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<0.6
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Zn
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mg/kg
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<0.6
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Ni
|
mg/kg
|
<0.6
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Cr
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mg/kg
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<0.6
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Mg
|
mg/kg
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<1.5
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Na
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mg/kg
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<1.5
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K
|
mg/kg
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<1.5
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Al
|
mg/kg
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<1.5
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Further reading---
The market for DEF is being created due to the new emission requirements promulgated by the EPA to meet the most recent Clean Air Act specifications. As depicted below the progressive reduction in diesel emissions has driven tremendous changes in engine requirements over the past 15 years. These efforts have been focused on reducing particulates, S, and NOX emissions. DEF is focused on meeting the 2010 requirement for NOX emissions reductions.
The specific approach used to reduce NOX emissions requiring DEF is referred to as SCR or Selective Catalytic Reduction. SCR uses a chemical called Diesel Exhaust Fluid (DEF / Urea) and a SCR catalytic converter to significantly reduce nitrogen oxide (NOx) emissions in diesel engines.
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